Synthesis of N,C Bound Sulfur, Selenium, and Tellurium Heterocycles via the Reaction of Chalcogen Halides with −CH<sub>3</sub> Substituted Diazabutadiene Ligands
Why this work is in the frame
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Bibliographic record
Abstract
A series of N,C bound chalcogen heterocycles from the reaction of chalcogen halides (ChX(n); Ch = S, Se Te; X = Cl, Br; n = 2, 4) with N-alkyl or N-aryl 1,4-diazabutadiene (DAB) ligands featuring methyl substituents on the backbone C-C linkage are reported. In contrast to what is observed for other p-block elements with the same ligand systems, which typically bind in an N,N' fashion, the chalcogens react with the ligand in an unusual manner, forming N(1)C(3)Ch(1) five-membered rings by incorporating a "backbone" methyl group. Solid state structures of the feature compounds have been confirmed by X-ray crystallographic studies. The reaction mechanism was probed by deuterium isotope labeling of the DAB ligand and analyzed using stopped-flow kinetics experiments, which supported attack by the olefin in the enamine form of the DAB ligand with concomitant loss of HX.
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Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it